Oth fx upr and low end r fibula, subs for clos fx w malunion

This code signifies a previously sustained fracture of either the proximal or distal end of the right fibula that is currently undergoing treatment for a closed fracture that has healed improperly, resulting in a malunion. The patient is in the healing phase, and the focus of care is on addressing the anatomical misalignment of the bone fragments.

This code is appropriate for follow-up encounters where a patient is being managed for a malunited closed fracture of the upper or lower right fibula. This includes situations where the malunion is being monitored, or where interventions such as physical therapy, bracing, or surgical correction of the malunion are being planned or performed. It should be used after the initial treatment of the acute fracture has concluded.

• Ensure documentation clearly specifies "malunion" and the "subsequent encounter" status.
• Verify the fracture location is specifically the upper or lower end of the right fibula, not the shaft.
• Do not use this code for nonunion, which has distinct coding.